Re: Weird IWS Bug (?)

["Nadir Amra" <amra@xxxxxxxxxx>]

I do not know the problem but are you initializing the _LENGTH field in 
your RPG code?




"WEB400" <web400-bounces@xxxxxxxxxxxxxxxxxx> wrote on 07/15/2019 07:48:35 
PM:

> From: Jon Paris <jon.paris@xxxxxxxxxxxxxx>
> To: "Web Enabling the IBM i (AS/400 and iSeries)" 
<web400@xxxxxxxxxxxxxxxxxx>
> Date: 07/15/2019 07:48 PM
> Subject: [EXTERNAL] [WEB400] Weird IWS Bug (?)
> Sent by: "WEB400" <web400-bounces@xxxxxxxxxxxxxxxxxx>
>
> Anyone seen this before?
>
> I have a working REST/JSON Web Service generated by IWS (for the 
> curious Booth's challenge to me to find a better way to describe the
> process than the current docs made me revisit it this weekend).
>
> The service takes a URL of the form system stuff/sertvicename/cat/02
> where cat is the parameter name and 02 is the value.
>
> It works just fine but when there are less than the maximum number 
> of rows it outputs multiple empty elements. 
>
> To deal with this I added an extra parameter with array name_LENGTH 
> as the name and told the wizard to detect length. 
>
> Now here's the weirdness.  When I invoke the service I get:
>
> java.lang.RuntimeException: Invocation of program failed.
> AS400Message (ID: CEE9901 text: Application error.  MCH0603 
> unmonitored by RESTSRV4 at statement 0000000172, instruction 
> X'0000'.):com.ibm.as400.access.AS400Message@f9cb28fc
> OK - let's debug that - I add a Service Entry Point and try again. 
> This time it doesn't "fail" it just produces rubbish output - like this:
> {"RESULT":"","PRODUCTLIST_LENGTH":0,"PRODUCTLIST":
> [{"PRODCD":"","PRODDS":"","CATCOD":"","STOH":0,"LNDCST":0.
> 00,"SELLPR":0.00,"DTLCHG":0,"DTLORD":0},
> {"PRODCD":"","PRODDS":"","CATCOD":"","STOH":0,"LNDCST":0.
> 00,"SELLPR":0.00,"DTLCHG":0,"DTLORD":0},
> {"PRODCD":"","PRODDS":"","CATCOD":"","STOH":0,"LNDCST":0.
> 00,"SELLPR":0.00,"DTLCHG":0,"DTLORD":0},
> {"PRODCD":"","PRODDS":"","CATCOD":"","STOH":0,"LNDCST":0.
> 00,"SELLPR":0.00,"DTLCHG":0,"DTLORD":0},
> ...
> {"PRODCD":"","PRODDS":"","CATCOD":"","STOH":0,"LNDCST":0.
> 00,"SELLPR":0.00,"DTLCHG":0,"DTLORD":0}]}
> In other words the skeleton JSON but with no data!
>
> How the hell can I debug something that "works" in debug and only 
> blows up when not?
>
> Anyone seen this one before?